# Otterville Quarry

- **MSHA mine ID:** 2302496
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cooper, MO
- **Operator:** Higgins Materials, LLC
- **Controller:** Terry  Higgins; Keith  Higgins
- **Public source rows linked:** 336
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Terry  Higgins; Keith  Higgins (0120701) → Higgins Materials, LLC (0141274) → Otterville Quarry (2302496)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Terry  Higgins et al → Higgins Materials, LLC:** 2015-10-06 through current/open; derived from co-tenure at mine 2302496; source `msha-controller-operator-history`.
- **Keith  Higgins et al → Higgins Materials, LLC:** 2015-10-06 through current/open; derived from co-tenure at mine 2302496; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- Interval anomalies: 0
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 4 lost days across the published record.
2. **COMPLIANCE — 30 since 2021:** Violations and penalties 86 violation rows across the full record; 20 carry an S&S flag and $32,393 appears in current assessed amounts.
3. **HEALTH — 12 samples:** Occupational health samples 12 personal. 0 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 3K employee hours and 9 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 9 conference records linked by issuance number.
6. **CONTRACTORS — 0 linked entities:** Contractors Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
7. **INSPECTIONS — 14 since 2021:** Inspections 34 inspection events and 455 published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 56.15005 — Safety belts and lines.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15005
- **30 CFR 56.14209 — Safety procedures for towing.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14209
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **30 CFR 56.12020 — Protection of persons at switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12020
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2017-07-20 through 2017-07-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2015-12-21 through 2015-12-21; source ID `msha-addresses`
- **Assessed Violations:** 84 rows; 2016-02-03 through 2026-07-13; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2020-09-16 through 2023-03-20; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 9 rows; 2019-10-24 through 2022-07-21; source ID `msha-conferences`
- **Contested Violations:** 4 rows; 2020-03-31 through 2022-04-19; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 2015-10-06 through 2015-10-06; source ID `msha-controller-operator-history`
- **Inspections:** 34 rows; 2016-02-03 through 2026-07-13; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 81 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 17 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 12 rows; 2018-08-22 through 2024-08-27; source ID `msha-personal-health-samples`
- **Violations:** 86 rows; 2016-02-03 through 2026-07-13; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/otterville-quarry-2302496`
- JSON: `/api/v1/mines/otterville-quarry-2302496`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2302496/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2302496/relationships`
- MCP resource: `mine://2302496/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`